CN101458980A - Composite metal line for packaging conductive wire and manufacturing method thereof - Google Patents
Composite metal line for packaging conductive wire and manufacturing method thereof Download PDFInfo
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- CN101458980A CN101458980A CNA2007101795608A CN200710179560A CN101458980A CN 101458980 A CN101458980 A CN 101458980A CN A2007101795608 A CNA2007101795608 A CN A2007101795608A CN 200710179560 A CN200710179560 A CN 200710179560A CN 101458980 A CN101458980 A CN 101458980A
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Abstract
The invention provides a composite metal line for packing conducting wire and a manufacture method thereof. The manufacture method comprises: preparing the material containing silver and gold; arranging the material into a vacuum melting furnace to be melted; adding at least two trace metal elements into the vacuum melting furnace to prepare composite metal ingot; pulling the composite metal ingot into composite metal lines; stretching the composite metal lines to required diameter. The composite metal line made from at least two metal elements has same performance of the metal line made from pure gold and can reduce cost significantly.
Description
Technical field
The metal wire that the relevant a kind of packaging conductive wire of the present invention is used refers to a kind of composite metal wire and manufacture method thereof especially.
Background technology
In semiconductor packaging as integrated circuit (IC), light-emitting diode (LED) and surface acoustic wave (SAW), all be to utilize routing to engage operation, chip is formed by the lip-deep circuit of metal wire and circuit substrate be electrically connected, with as signal between chip and the circuit substrate and current delivery.
According to semiconductor packages form difference, the specification of metal wire, line footpath and the bonding wire board making parameter of arranging in pairs or groups are also different, and the key property parameter of metal wire is as fracture loading (Breaking Load), ductility (Elongation), flexibility (loop) and fusing point etc., with the material of its use direct relation arranged.Because the quality of the characterisitic parameter of metal wire, the useful life and the stability of semiconductor subassembly after the influence encapsulation finished.Therefore when selecting the material of metal wire for use, required metal wire when mostly adopting ductility and the preferable material of stability to make semiconductor packages.
Metal wire commonly used at present mainly comprises two kinds, and a kind of is pure gold metal wire, another kind of aluminium silicon metal wire for the mixing of aluminium silicon.Though the metal wire of proof gold manufacturing has preferable physical property such as ductility and conductivity, because the metal wire cost that proof gold is made is higher, easily cause overall semiconductor assembly cost to increase.Therefore, it is similar how to allocate and make a kind of and pure gold metal wire effect, and can significantly reduce cost again, is problem to be solved by this invention.
Summary of the invention
In view of this, the object of the present invention is to provide and a kind ofly make with the allotment of two or more metallic element, similar with the metal wire effect that proof gold is made, and the packaging conductive wire that can significantly reduce cost composite metal wire and the manufacture method thereof used.
For reaching above-mentioned purpose, the invention provides the manufacture method of the composite metal wire that a kind of packaging conductive wire uses: at first have the raw material that includes silver and golden composition, then, this raw material is placed in vacuum melting furnace carries out melting, and in vacuum melting furnace, add two or more minor metallic element, to make the composition metal ingot bar, then, composition metal ingot bar pull is formed the composition metal wire rod; At last, this composition metal wire rod is stretched as the composite metal wire in preset lines footpath.
With the composite metal wire of above-mentioned manufacture method gained of the present invention, its constituent comprises: percentage by weight is 90.00～99.99% silver (Ag); And percentage by weight is 0.00001～9.99997% gold (Au).
The composite metal wire that the present invention makes by two or more metallic element allotment, similar with the metal wire effect that proof gold is made, and can significantly reduce cost.
Description of drawings
Fig. 1 is the flow chart of composite metal wire manufacture method of the present invention;
Fig. 2 is the refinement flow chart of Fig. 1.
Description of reference numerals
Step 102a～102f
Step 104a～104f
Embodiment
Relevant technology contents of the present invention and detailed description, conjunction with figs. is described as follows:
As shown in Figures 1 and 2, be respectively the flow chart of composite metal wire manufacture method of the present invention and the refinement flow chart of Fig. 1.As shown in Figure 1 and Figure 2, the manufacture method of composite metal wire of the present invention at first, in step 100, has the raw material that includes silver (Ag) composition and gold (Au) composition earlier.
Secondly, in step 102, carry out the melting manufacturing, this raw material that includes silver and golden composition is placed in vacuum melting furnace (as step 102a) carries out melting, and in vacuum melting furnace, add copper (Cu), beryllium (Be) and aluminium (Al) and wait two or more minor metallic element to carry out mixing preparation (as step 102b), to refine out composition metal ingot bar (as step 102c) by vacuum melting furnace.The constituent of this composition metal ingot bar comprises: percentage by weight is that 90.00～99.99% silver, percentage by weight are that 0.00001～9.99997% gold, percentage by weight are that 0.00001～2.99997% copper, percentage by weight are 0.00001～2.99997% beryllium, and percentage by weight is 0.00001～2.99997% aluminium.
Then, again the composition metal ingot bar being formed preset lines via continuous casting with pull directly is the composition metal wire rod (as step 102d) of 4～8mm.Batch this composition metal wire rod (as step 102e) by winding machine again, and carry out the constituent analysis (as step 102f) of composite metal wire material, whether meet the requirements to judge its component ratio.
The composite metal wire of the invention described above can be applicable to IC, LED and the SAW encapsulation is used as lead.
The present invention will be described in more detail for a following borrow embodiment:
Embodiment 1
The raw material that will include silver and gold is placed in vacuum melting furnace and carries out the melting manufacturing, and adds minor metallic elements such as copper, beryllium and aluminium carry out mixing preparation in vacuum melting furnace, then, refines out the composition metal ingot bar by vacuum melting furnace.Wherein, the constituent of composition metal ingot bar comprises: percentage by weight is that 98.659% silver (Ag), percentage by weight are that 0.50% gold (Au), percentage by weight are that 0.84% copper, percentage by weight are 0.0008% beryllium, and percentage by weight is 0.0002% aluminium.
Directly is the composition metal wire rod of 6mm via continuous casting with the pull outlet with this composition metal ingot bar.Batch the composition metal wire rod by winding machine, and carry out the constituent analysis of composite metal wire material.
After the casting of composition metal wire rod is finished, carrying out line directly stretches, make script be stretched to 3mm through the first thick wire drawing machine for the line footpath of 6mm, be stretched to 1.00mm through the second thick wire drawing machine, be stretched to 0.50mm through the first thin wire drawing machine, again with the composition metal wire rod of 0.50mm in regular turn through the second thin wire drawing machine, superfine wire drawing machine, and super superfine wire drawing machine is stretched as preset lines with the composition metal wire rod and directly is the composite metal wire of 0.0508mm or 0.0254mm.
At last, stretched composite metal wire surface of finishing is cleaned, and composite metal wire is carried out thermal anneal process.
Embodiment 2
The raw material that will include silver and gold is placed in vacuum melting furnace and carries out the melting manufacturing, and adds minor metallic elements such as copper, beryllium and aluminium carry out mixing preparation in vacuum melting furnace, then, refines out the composition metal ingot bar by vacuum melting furnace.Wherein, the constituent of composition metal ingot bar comprises: percentage by weight is that 99.99% silver (Ag), percentage by weight are that 0.005% gold (Au), percentage by weight are that 0.003% copper, percentage by weight are 0.001% beryllium, and percentage by weight is 0.001% aluminium.
Directly is the composition metal wire rod of 6mm via continuous casting with the pull outlet with this composition metal ingot bar.Batch the composition metal wire rod by winding machine, and carry out the constituent analysis of composite metal wire material.
After the casting of composition metal wire rod is finished, carrying out line directly stretches, make script be stretched to 3mm through the first thick wire drawing machine for the line footpath of 6mm, be stretched to 0.8mm through the second thick wire drawing machine, be stretched to 0.45mm through the first thin wire drawing machine, again with the composition metal wire rod of 0.45mm in regular turn through the second thin wire drawing machine, superfine wire drawing machine, and super superfine wire drawing machine is stretched as preset lines with the composition metal wire rod and directly is the composite metal wire of 0.0508mm or 0.0254mm.
At last, stretched composite metal wire surface of finishing is cleaned, and composite metal wire is carried out thermal anneal process.
Embodiment 3
The raw material that will include silver and gold is placed in vacuum melting furnace and carries out the melting manufacturing, and adds minor metallic elements such as copper, beryllium and aluminium carry out mixing preparation in vacuum melting furnace, then, refines out the composition metal ingot bar by vacuum melting furnace.Wherein, the constituent of composition metal ingot bar comprises: percentage by weight is that 95% silver (Ag), percentage by weight are that 1.25% gold (Au), percentage by weight are that 1.25% copper, percentage by weight are 1.25% beryllium, and percentage by weight is 1.25% aluminium.
Directly is the composition metal wire rod of 6mm via continuous casting with the pull outlet with this composition metal ingot bar.Batch the composition metal wire rod by winding machine, and carry out the constituent analysis of composite metal wire material.
After the casting of composition metal wire rod is finished, carrying out line directly stretches, make script be stretched to 3mm through the first thick wire drawing machine for the line footpath of 6mm, be stretched to 0.9mm through the second thick wire drawing machine, be stretched to 0.45mm through the first thin wire drawing machine, again with the composition metal wire rod of 0.45mm in regular turn through the second thin wire drawing machine, superfine wire drawing machine, and super superfine wire drawing machine is stretched as preset lines with the composition metal wire rod and directly is the composite metal wire of 0.0508mm or 0.0254mm.
At last, stretched composite metal wire surface of finishing is cleaned, and composite metal wire is carried out thermal anneal process.
Embodiment 4
The raw material that will include silver and gold is placed in vacuum melting furnace and carries out the melting manufacturing, and adds minor metallic elements such as copper, beryllium and aluminium carry out mixing preparation in vacuum melting furnace, then, refines out the composition metal ingot bar by vacuum melting furnace.Wherein, the constituent of composition metal ingot bar comprises: percentage by weight is that 97% silver (Ag), percentage by weight are that 0.00001% gold (Au), percentage by weight are that 0.00001% copper, percentage by weight are 2.99997% beryllium, and percentage by weight is 0.00001% aluminium.
Directly is the composition metal wire rod of 4mm via continuous casting with the pull outlet with this composition metal ingot bar.Batch the composition metal wire rod by winding machine, and carry out the constituent analysis of composite metal wire material.
After the casting of composition metal wire rod is finished, carrying out line directly stretches, make script be stretched to 2.5mm through the first thick wire drawing machine for the line footpath of 4mm, be stretched to 0.9mm through the second thick wire drawing machine, be stretched to 0.45mm through the first thin wire drawing machine, again with the composition metal wire rod of 0.45mm in regular turn through the second thin wire drawing machine, superfine wire drawing machine, and super superfine wire drawing machine is stretched as preset lines with the composition metal wire rod and directly is the composite metal wire of 0.0508mm or 0.0254mm.
At last, stretched composite metal wire surface of finishing is cleaned, and composite metal wire is carried out thermal anneal process.
Embodiment 5
The raw material that will include silver and gold is placed in vacuum melting furnace and carries out the melting manufacturing, and adds minor metallic elements such as copper, beryllium and aluminium carry out mixing preparation in vacuum melting furnace, then, refines out the composition metal ingot bar by vacuum melting furnace.Wherein, the constituent of composition metal ingot bar comprises: percentage by weight is that 90% silver (Ag), percentage by weight are that 9.99997% gold (Au), percentage by weight are that 0.00001% copper, percentage by weight are 0.00001% beryllium, and percentage by weight is 0.00001% aluminium.
Directly is the composition metal wire rod of 8mm via continuous casting with the pull outlet with this composition metal ingot bar.Batch the composition metal wire rod by winding machine, and carry out the constituent analysis of composite metal wire material.
After the casting of composition metal wire rod is finished, carrying out line directly stretches, make script be stretched to 2mm through the first thick wire drawing machine for the line footpath of 8mm, be stretched to 0.9mm through the second thick wire drawing machine, be stretched to 0.45mm through the first thin wire drawing machine, again with the composition metal wire rod of 0.45mm in regular turn through the second thin wire drawing machine, superfine wire drawing machine, and super superfine wire drawing machine is stretched as preset lines with the composition metal wire rod and directly is the composite metal wire of 0.0508mm or 0.0254mm.
At last, stretched composite metal wire surface of finishing is cleaned, and composite metal wire is carried out thermal anneal process.
Embodiment 6
The raw material that will include silver and gold is placed in vacuum melting furnace and carries out the melting manufacturing, and adds minor metallic elements such as copper, beryllium and aluminium carry out mixing preparation in vacuum melting furnace, then, refines out the composition metal ingot bar by vacuum melting furnace.Wherein, the constituent of composition metal ingot bar comprises: percentage by weight is that 97% silver (Ag), percentage by weight are that 0.00001% gold (Au), percentage by weight are that 0.00001% copper, percentage by weight are 0.00001% beryllium, and percentage by weight is 2.99997% aluminium.
Directly is the composition metal wire rod of 6mm via continuous casting with the pull outlet with this composition metal ingot bar.Batch the composition metal wire rod by winding machine, and carry out the constituent analysis of composite metal wire material.
After the casting of composition metal wire rod is finished, carrying out line directly stretches, make script be stretched to 3mm through the first thick wire drawing machine for the line footpath of 6mm, be stretched to 0.9mm through the second thick wire drawing machine, be stretched to 0.45mm through the first thin wire drawing machine, again with the composition metal wire rod of 0.45mm in regular turn through the second thin wire drawing machine, superfine wire drawing machine, and super superfine wire drawing machine is stretched as preset lines with the composition metal wire rod and directly is the composite metal wire of 0.0508mm or 0.0254mm.
At last, stretched composite metal wire surface of finishing is cleaned, and composite metal wire is carried out thermal anneal process.
Embodiment 7
The raw material that will include silver and gold is placed in vacuum melting furnace and carries out the melting manufacturing, and adds minor metallic elements such as copper, beryllium and aluminium carry out mixing preparation in vacuum melting furnace, then, refines out the composition metal ingot bar by vacuum melting furnace.Wherein, the constituent of composition metal ingot bar comprises: percentage by weight is that 97% silver (Ag), percentage by weight are that 0.00001% gold (Au), percentage by weight are that 2.99997% copper, percentage by weight are 0.00001% beryllium, and percentage by weight is 0.00001% aluminium.
Directly is the composition metal wire rod of 6mm via continuous casting with the pull outlet with this composition metal ingot bar.Batch the composition metal wire rod by winding machine, and carry out the constituent analysis of composite metal wire material.
After the casting of composition metal wire rod is finished, carrying out line directly stretches, make script be stretched to 2mm through the first thick wire drawing machine for the line footpath of 6mm, be stretched to 0.9mm through the second thick wire drawing machine, be stretched to 0.45mm through the first thin wire drawing machine, again with the composition metal wire rod of 0.45mm in regular turn through the second thin wire drawing machine, superfine wire drawing machine, and super superfine wire drawing machine is stretched as preset lines with the composition metal wire rod and directly is the composite metal wire of 0.0508mm or 0.0254mm.
At last, stretched composite metal wire surface of finishing is cleaned, and composite metal wire is carried out thermal anneal process.
In sum, the composite metal wire that the present invention makes by two or more metallic element allotment, similar with the metal wire effect that proof gold is made, and can significantly reduce cost, reach effect of the present invention really.
Above-mentioned is preferred embodiment of the present invention only, is not to be used for limiting scope of the invention process, and promptly all equalizations of doing according to claims of the present invention change and modify, and are all contained by claim of the present invention.
Claims (13)
1, the manufacture method of the composite metal wire used of a kind of packaging conductive wire is characterized in that, comprises:
A), have the raw material that includes silver and golden composition;
B), this raw material be placed in vacuum melting furnace carry out melting, and in vacuum melting furnace, add two or more minor metallic element, make the composition metal ingot bar;
C), composition metal ingot bar pull is formed the composition metal wire rod; And
D), the composition metal wire rod is stretched as the composite metal wire in preset lines footpath.
2, the manufacture method of the composite metal wire used of packaging conductive wire as claimed in claim 1 is characterized in that the silver-colored shared percentage by weight of described step a is 90.00～99.99%.
3, the manufacture method of the composite metal wire used of packaging conductive wire as claimed in claim 2, its feature, the golden shared percentage by weight of described step a is 0.00001～9.99997%.
4, the manufacture method of the composite metal wire used of packaging conductive wire as claimed in claim 3 is characterized in that, it is 0.00001～2.99997% copper that the minor metallic element among the described step b includes percentage by weight.
5, the manufacture method of the composite metal wire used of packaging conductive wire as claimed in claim 4 is characterized in that, it is 0.00001～2.99997% beryllium that the minor metallic element among the described step b includes percentage by weight.
6, the manufacture method of the composite metal wire used of packaging conductive wire as claimed in claim 5 is characterized in that, it is 0.00001～2.99997% aluminium that the minor metallic element among the described step b includes percentage by weight.
7, the manufacture method of the composite metal wire used of packaging conductive wire as claimed in claim 1, it is characterized in that, it directly is the composition metal wire rod of 4～8mm that composition metal ingot bar among the described step c forms preset lines via continuous casting with pull, batch the composition metal wire rod by winding machine again, and carry out the constituent analysis of composite metal wire material.
8, the manufacture method of the composite metal wire that packaging conductive wire as claimed in claim 7 is used, it is characterized in that, the line footpath of this composition metal wire rod in the described steps d is 4～8mm originally, this composition metal wire rod is contracted to 3mm through the stretching of the first thick wire drawing machine or below the 3mm, be stretched to 1.00mm or below the 1.00mm through the second thick wire drawing machine again, be stretched to 0.50mm or below the 0.50mm through the first thin wire drawing machine again, then, again with 0.50mm or the composition metal wire rod below the 0.50mm in regular turn through the second thin wire drawing machine, it directly is the composite metal wire of 0.0508mm or 0.0254mm that superfine wire drawing machine and super superfine wire drawing machine are stretched as preset lines with the composition metal wire rod.
9, the manufacture method of the composite metal wire used of packaging conductive wire as claimed in claim 8 is characterized in that, carries out surface clean and thermal anneal process after the described steps d.
10, the composite metal wire used of a kind of packaging conductive wire is characterized in that its constituent comprises:
Percentage by weight is 90.00～99.99% silver; And
Percentage by weight is 0.00001～9.99997% gold.
11, the composite metal wire used of packaging conductive wire as claimed in claim 10 is characterized in that, it is 0.00001～2.99997% copper that described constituent also comprises percentage by weight.
12, the composite metal wire used of packaging conductive wire as claimed in claim 11 is characterized in that, it is 0.00001～2.99997% beryllium that described constituent also comprises percentage by weight.
13, the composite metal wire used of packaging conductive wire as claimed in claim 12 is characterized in that, it is 0.00001～2.99997% aluminium that described constituent also comprises percentage by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101795608A CN101458980A (en) | 2007-12-14 | 2007-12-14 | Composite metal line for packaging conductive wire and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101795608A CN101458980A (en) | 2007-12-14 | 2007-12-14 | Composite metal line for packaging conductive wire and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN101458980A true CN101458980A (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101795608A Pending CN101458980A (en) | 2007-12-14 | 2007-12-14 | Composite metal line for packaging conductive wire and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119590A (en) * | 2015-05-07 | 2016-11-16 | Mk电子株式会社 | Silver alloy closing line and manufacture method thereof |
| CN108231718A (en) * | 2017-12-20 | 2018-06-29 | 汕头市骏码凯撒有限公司 | The compound bonding wire of gold and silver aluminium copper and its manufacturing method with golden clad |
-
2007
- 2007-12-14 CN CNA2007101795608A patent/CN101458980A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119590A (en) * | 2015-05-07 | 2016-11-16 | Mk电子株式会社 | Silver alloy closing line and manufacture method thereof |
| CN108231718A (en) * | 2017-12-20 | 2018-06-29 | 汕头市骏码凯撒有限公司 | The compound bonding wire of gold and silver aluminium copper and its manufacturing method with golden clad |
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Open date: 20090617 |